Water-heating apparatus.



vv. M. PARTRIDGB.

WATER HEATING APPARATUS.

APPLICATION FILED NOV. 8, 1909.

wqtgyggw Patented Jan. 7', 1913.

2 SHEETS-SHEET 1.

W. M. PARTRIDGE. WATER HEATING APPARATUS.

APPLICATION FILED NOV. 8, 1909.

Patented Jan. 7, 1913.

2 SHEETS-SHIEET 2.

' heatlng-coil.

5o lower end a bell-shaped extension b2.

adjustabl f H TED STATES PATENT onirica WELLES MORTIMER PARTRIDGE, 0FMARBLEHEAD, MASSACHUSETTS. i

WATER-HEATING APPARATUS.

Specification of Letters Patent.

Application tiled November 8, 1909. Serial No. 526,728.

To all whom t may concern:

Be it known that I, WELLns MoR'rrMER PARTRIDGE, of Marblehead, county ofEssex, State of Massachusetts, have invented an Improvement inWater-Heating Apparatus, of which the following is a specification. v

This invention relates to water-heating devices for small boilers andthe like, and has for its object to construct a heating-coil of improvedform, provided with means for confining the heat in intimate contacttherewith, whereby a very efficient apparatus is produced, W struct andinstall; and the invention also has for its object improvements in theconstructionfof the apparatus,l as will be here matter pointed out.

Figure 1 isa vertical section of a waterheating apparatus embodying thisinvention. F ig. 2 is aplan view of the waterheating apparatus, the topon the cylinder being removed. Fig. 3 is a horizontal section of sametaken on the dotted line Fig. 4 is a plan View of the ring which isprovided at the base of the Fig. 5 is a modification to be referred to.

construction; a a pipe leading there- 'from to the lower end of aheating-coil, and

a2 a pipe leadingthereto from the upper end of said 'heatlng-coil. Theheating-coil is composed of pipe, bent or coiled to form two conicalfrustums arranged one above the other, with their smaller endsadjoining, as representing the lower conical frustum, and a4 the upperconical rustum. The coil may comprise oneor more pieces of pipe, but iscontinuous from end to end. The lower end of the lower conical frustumis connected by a coupling a with the pipe a', and the upper conicalfrustum is connected by a coupling a with the pipe a2. Sald couplingsare here shown as quadrangular .inl cross-section to substantially tillrecesses formed in the castings through which they pass, but they mayThe heating-coil rests on lugs b extended inwardly from a ring b', whichhas at lts Said on its under side' lugs b3, adapted to rest upon and beconnected with the upper ends of supporting-arms c, any desired numberbeing employed, which are connected at their lower ends to an uprig tpost c', rising from a suitable ring also has 1ch is compact and easy tocon.

. a represents a boiler of any suitable size and be of any other shape.

base c2. bell-shaped extension are preferably, but not necessarily, castin a single piece. The heatlng-coil is contained in a cylindrical cased. Said case is fitted over the ring b and rests'on top of the extensionb2 and extends up' to a point above the top ot the coil, and it is openat each end, and at the top has fitted into and upon it a cap al. Saldcap has a flange Z2 which extends down into the case, and a flange d3which extends over upon the outside of the case, so that the upper edgeof the case enters the space formed between the flanges d2 and d3. Saidcap is secured tothe case by screws d? or otherwise. Said cap has acenter-hole' ai through it of any suitable size. Said case as here shownconsists of two concentrically arranged metallic cylinders disposed witha space between them containing insulating or non-,heat conductingmaterial. j

The lower part of the heating-coil or conical frustum a is inclosed by ashield e of frusto-conical form, corresponding to the shape of theportion of the heatingcoil which it inoloses. Said frusto-conical shieldextends from the ring b on which it rests to near the upper end of thelower conical trust-um, and it is preferably made to engage theheating-coil, as shown,"'but it may be arranged more or less removedtherefrom, if desired. The heating-coil has arranged within it animperforate shield f of conical form, which extends from the to of theupper conical frustum downward The ring b and lugs thereon and''Patented J an.. 7, 1913.

to at or near the lower end of the lower i conical ltrust-um, andsaidshield is placed in the upper conical frustum and preferably supportedby it. The shield e, as here shown, is composed of a metallic inner-wallwhich is covered externally with an insulating or nonheat-conductingmaterial, and .the shield f, as here shown, is composed of a metallicouter-wall which is linedwith insulating or non-hieat-conductingmaterial, and the metallic wallsof said s ields serve as deflectors forthe heat. Theheat, passing up. through the lower conical frustum isconfined by the .frusto-coni-cal shield'e, thereby heating the lowerpart of the heat ing-coll, and it then passes out between theconvolutions into the case d, at the upper end of-,said'shield e,.and isconfined between i the walls of the case and the shield f, therebyheating the upper part of the heating-coll. The imperforate conicalshleld f,

L and gas by any suitable means.

when resting in the upper partv of the heating-coil and extended downinto the lower plart thereof acts as a deflector to cause the eat toengage all the convolutions of the heating-coil and causes the heat topass up on the outside of the upper part' of the heating-coil. It willthus be seen that the heat passes upward on the inside of the lower partof the heating-coil and on the outside of the upper part of theheatingcoil. By reason of the conicalformation of the two parts of theheating-coil, when constructed as `here shown, the heat will. directlyengage each and every convolution thereof as it passes upward. By makingthe heating-coil in two conical frustums, as shown, and arranging theshields on the outside of one and on the inside of the other, the waterpasing through the heating-coil is vvery quickly heated; f

The coupling a,6 extends through a hole made in the case d and flange d2on the cap and the coupling a5 extends through a like hole made in 4-thecase d and ring b', the shape of the couplings corresponding to theshapes of the holes.

As shown in Fig. l, the heating-coil is arranged above a gas-burner g ofany suitable construction, which is located inside of the bell-shapedextension, and which is adjustably supported on the upright post o andadapted to be supplied with mixed 'air In Fig. 5 the heating-coil isarranged in astove-pipe k, which is connected in ordinary manner to astove or range h, and the heat passes i through it in the same manner asshown, in Fig. l.

A modification of m invention forms the i. subject-matter of a ivisionalapplication, serial No. 622,676, filed April 22, 1911.

I claim: I

1. In a water-heating apparatus, a heatfwf ing-coil adapted to beconnected with ai boiler, made 1n the form of two conical frustums,arranged one above the other,

with their smaller ends adjoining, a case containing'said coil, open ateach end, and an imperforate conical shield, arranged Iin theheating-coil, and extended from top to vbottom thereof, substantially asdescribed.

2. In a water-heating apparatus, a heating-coil adapted to be connectedwith a boiler made in the form of two conical frustums arranged oneabove the other with their smaller ends adjoining, a case containingsaid coil open at each end, and an imperforate conical shield arrangedin the heating-coil and extended from top to bottom thereof, said shieldbeing supported in contactwith the upper conical frustum, substantiallyas described.

3. In a water-heating apparatus, ing-coil adapted to be connected with aboiler, made in the form of two conical frustums, arranged one above theother, with their. smaller ends adjoining, a case containing said coilopen at each end, a frii'sto-conical shield inclosing the lower conicalfrustum of the heating-coil, and an imperforate conical shield arrangedin the heating-coil and extended from top to bottom thereof,substantially as described.

4. In a water-heating apparatus, a heating-coil adapted to be connectedwith a boiler, made in the form of two conical frustums, arranged oneabove the other, with their smaller ends adjoining, a casecontainingsaid coil, open at each end, and an imperforate conical shieldarranged in the heating-coil and extended from top to bottom thereof,and composed of a metallic outer wall and a lining of insulatingmaterial, substantially as described.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

WELLES MORTIMER PARTRIDGE.

a heat-

